import Vue from 'https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.esm.browser.js'

new Vue({
    el: '#app',
    template: `<div>
        <h1>{{ message }}</h1>
        <input v-model="message">
    </div>`,
    data: {
      message: 'Hello Vue.js!'
    }
})